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首页> 外文会议>International Workshop on Electromagnetic Non-destructive Evaluation >Numerical Simulation of EMAT for Structures of Ferromagnetic Material with Consideration of Electromagneto-Mechanical Coupling Effect
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Numerical Simulation of EMAT for Structures of Ferromagnetic Material with Consideration of Electromagneto-Mechanical Coupling Effect

机译：考虑电磁耦合效应的铁磁材料结构的数值模拟

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To clarify the influence of the electromagneto-mechanical coupling effect due to the additional electric field induced by the velocity effect on the simulation of EMAT signals, a numerical scheme and corresponding code are developed for structures of ferromagnetic material with consideration of coupling effect. Through introducing the V×B term to the governing equation of eddy current problem, the reduced vector potential (Ar) method and a step by step time integration algorithm were adopted for simulation. The simulation results demonstrated that the proposed numerical algorithm and the corresponding code are efficient. To investigate the influence of the coupling effect. EMAT signals of different condition were simulated by using both the codes with and without the coupling effect. It is demonstrated that the coupling effect does not give significant influence on the EMAT signals, which could be ignored in practice.
机译：为了阐明电磁铁耦合效应的影响由于由EMAT信号模拟的速度效应引起的附加电场，用于考虑耦合效果的铁磁材料结构开发了数值方案和相应的代码。通过将V×B术语引入涡流问题的控制方程，采用减少的矢量电位（AR）方法和步骤时间集成算法进行仿真。仿真结果表明，所提出的数值算法和相应的代码是有效的。探讨偶联效果的影响。通过使用耦合效果的代码模拟不同条件的EMAT信号。证明耦合效果对EMAT信号没有产生重大影响，这可以在实践中被忽略。

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